Answer:
Explanation:
1. Equilibrium Output or GDP is calculated by the expression;
Output or Y = Consumption + Investment + Government expenditure + Net exports
Net exports and Government expenditure are assumed to be 0.
Consumption = 100 + 0.9Y
Investment = $300 billion
Y = 100 + 0.9Y + 300
Y - 0.9Y = 400
Y = 400/0.1
Y = $4,000 billion
2. Y = 50 + 0.9Y + 300
Y - 0.9Y = 350
0.1Y = 350
Y = 350/0.1
Y = $3,500 Billion